Goatee

A Goatee is a beard formed by a tuft of hair on the chin. While under the effect of a crystal entity, several people had dreams depicting John Sheppard as a sociopathic antagonist. John Sheppard asked if he had a goatee in these dreams, a reference to the goateed First Officer Spock from "Mirror, Mirror", a classic Star Trek episode. (ATL: "Doppelganger")